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Income Taxes (Details)	3 Months Ended	12 Months Ended
	Mar. 31, 2025 Rate	Dec. 31, 2024 Rate	Dec. 31, 2023 Rate
Income Taxes - Tax Characteristics (Details) [Line Items]
Ordinary Income	0.00%	24.10%	38.00%

X

- Definition

Income Taxes - Tax Characteristics (Details) [Line Items]

+ References

No definition available.

+ Details

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Period Type:	duration

X

- Definition

The percentage of dividends which are classified as ordinary income for tax purposes.

+ References

No definition available.

+ Details

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Namespace Prefix:	earn_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration